KOROLYOV, G. Slavic Federation and “Free Union”, or Ukrainian Debates on Federalism in the “Long XIX Century”. Problems of World History, [S. l.], n. 4, p. 86–99, 2017. DOI: 10.46869/2707-6776-2017-4-6. Disponível em: https://journal.ivinas.gov.ua/pwh/article/view/86. Acesso em: 30 apr. 2024.